Heating device



L. GAzbA HEATING DEVICE March 10, 1936.

Filed June 18, 1934 Patented Mar. .10, 1936 UNITED STATES HEATING imivlouv Leopoldine Gazda, Neuilly-sur-Selne,

Application June 18,

1934, sensi N. '131,201

En France August 10,. 1933 it Claims.

This invention relates to an improved heating device in which means, used as the source of heating, produce a heating effect if molstened by water or another suitable liquid.

The heating device according to the present invention comprises an inner receptacle and an outer casing forming a heating space between said receptacle and said casing, means on said receptacle and said casing forming a lid over m said space, a liquid pervious casing for fully enclosing a chemical heating charge and removably arranged in said heating space, and air ports in said double walled casing establishing communication between the heating space and the outside.

One mode of carrying out the present invention is illustrated by way of example on the accompanying sheet ci' drawing in which Figs. 1

and 2 show a cooker in sectional elevation and in plan 'view respectively.,

ad The cooker consists of the receptacle I forV the heating agent, and of the cooking vessel 2 which is inserted in said receptacle and is provided with a ange Ill, which forms the lid for the receptacle I and overlaps the rim of the ad latter. In the receptacle I is inserted an insertion I, which preferably is adapted to the door of the cooking vessel 2, serves for the reception of the heating chemicals, and consists of a wire netting, perforated metal or the like and is 3d furnished with filling tube I3, which is vertically arranged in the hollow space and adapted to be closed by a cap It. Near the ange i, the receptacle I is provided with a number of unii'ormly distributed slots t for the admission of 3d air to the heating agent. An annular slide it is arranged on the receptacle I and provided with suitable ports. The said slide is mounted preterably on the ange I of the cooking vessel 2.

When rotating the annular slide lathe slots It d@ oi. the receptacle I and the ports oi said slide are placed in a position to coincide to a greater or smaller extent for controlling the admission of air to the hollow space t. For the purpose of heat insulation', the receptacle i is covered with a5 felt It or the like, which extends up to the rim of the annular slide Iii and is secured to the receptacle I by rivets 2d. Tensioning devices serve for securing the cooking vessel t to the receptacle I, said tensioning devices compris- 5o ing hooks I'I, xed for instance to the wall I of the receptacle, and brackets It secured to the annular slide I5 and adapted to engage said hooks. The limbs of each tensioning bracket It are set apart a sufiicient distance to permit the 55 cooking vessel 2 to be i'lxed in any position of the slide I5. The cooking vessel 2 is shut by a `lid 6, which may be secured byy a belt i9, passing around said vessel 2 and said lid t.

After the belt I9 is removed and the tensioning devices I1, I8 are opened it is possible to remove the cooking vessel t from the receptacle I.. The accessible netting insertion II is charged with heating chemicals by Way of the charging tube I3 and thecooking vessel t is lled with foodstu. Now a quantity of Water corresponding to the volume of the cap I2 is added to the chemicals, the tube I3 is closed by the screw-cap 2 and the cooking Vessel 2 is inserted in the 'receptacle I.` Hereafter the necessary volume of air is admitted to the hollow space t by turning the cooking vessel and adjusting the annular slide It, and now the vessel 2 is clamped to the receptacle I' by means of the tensioning devices Ill, It. The lid t is readily removable for watching the cooking. Ii the foodstuffs are cooked, the tensioning devices are disengaged and the cooking vessel containing the cooked foodstuffs can be removed from the receptacle I. I

What l claim isz- 1. Heating device, comprising in combination an inner receptacle and an outer casing formingv a heating space between said receptacle and said casing, means on said receptacle and said casing forming a lid over said space, a liquid-pervious casing for fully enclosing a chemical heating charge and removably arranged in said heating space, and air ports in said double walled casing establishing communication between the heating space and the outside.

2. Heating device, comprising in combination an outer casing, an inner receptacle disposed within said casing and. providing a heating space between said receptacle and said casing, a ange and overlapping the rim of the casing, a liquidpervious casing for fully enclosing a chemical heating charge and removably arranged in said heating space, and air ports in said outer casing establishing communication between the heating space and the outside; p

3. Heating device, comprising in combination an outer casing, an inner receptacle disposed within said casing and providing a heating space between said receptacle and said casing, a ange on said receptacle forming a lid over said space and overlapping the rim of the casing, a liquidpervious member for the reception of a chemical heating charge arranged in said heating space, air ports in said casing establishing communication between the heating space and the outside,

on saidy receptacle forming a lid over said space and a slide on the outer casing controlling the air ports.

4. Heating device, comprising in combination an outer` casing, an inner receptacle disposed ,Within said casing and leaving a heating space between said receptacle and said casing, a ange on said receptacle forming a lid over said space and overlapping the rim of the casing, a liquidpervious member for the reception of a chemical heating charge arranged in said heating space, air ports in said casing establishing communication between the heating space and the outside, and an annular member secured to said iiange and provided with air passages for controlling the air ports. l

5. Heating device, comprising in combination an outer casing, an inner receptacle disposed Within said Acasing and providing a heating spacel securing the .receptacle to the casing.

LEOPOLDINE GAZDA. 

